An ablation device and method of acquiring a catheter shape in an ablation treatment

Abstract

The application relates to an ablation device, comprising a handle, a catheter, a plurality of ablation electrodes, an energy generating device, a monitoring component and a control module, the plurality of ablation electrodes are distributed on the catheter, the monitoring component is also arranged on the catheter, the control module is electrically connected or communicatively connected with the monitoring component, the control module is configured to receive signals transmitted by the monitoring component and analyze and process the received signals, and then obtain information representing the shape of the catheter. Through the arrangement of the monitoring component and the cooperation of the control module, the information representing the shape of the catheter can be obtained, the shape of the catheter is recognized, the medical staff can formulate the optimal ablation scheme according to the recognition result and the actual situation, the ablation effect is improved, the work efficiency is improved, the visual operation is realized, and the structure is simple and the operation is convenient.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of ablation devices, and particularly relates to an ablation device suitable for arrhythmia treatment, an operation method of the ablation device and a treatment method based on the device. BACKGROUND

[0002] At present, the treatment of arrhythmia usually adopts a thermal ablation technology. Common thermal ablation technologies include radiofrequency ablation, laser ablation and microwave ablation. However, these thermal ablation technologies are difficult to achieve the ablation target of transmural injury, thus affecting the treatment effect. In addition, these thermal ablation technologies do not have cell selectivity, thus non-target cells are also ablated and damaged, affecting the ablation effect.

[0003] Based on the defects of the above-mentioned thermal ablation technology, a non-thermal ablation technology, such as high-voltage pulse ablation technology, has also appeared. The high-voltage pulse ablation technology is a new type of ablation method with high-voltage electric field as energy, and has tissue selectivity. Through designing appropriate pulse electric field, short-time release of multiple high-voltage pulses is adopted for ablation.

[0004] In order to improve the working efficiency of high-voltage pulse ablation, the ablation segment of the existing ablation catheter is mostly designed to present a ring shape, a basket shape and a spherical shape when it is deployed in the heart cavity, and a plurality of electrodes for releasing ablation energy are usually arranged on the ablation catheter. However, the ablation catheter will be deformed when it is deployed in the heart cavity due to the influence of internal and external forces, which leads to the fact that the real distribution of the electrodes in the heart cavity cannot be obtained, and the ablation efficiency is reduced. In addition, as the shape of the ablation catheter changes when it is deployed in the heart cavity, the spacing of the electrodes will also change. Under the same pulse voltage, the smaller the spacing of the electrodes, the larger the electric field strength will be, which will cause electric arc. The larger the spacing of the electrodes, the lower the electric field strength will be, which will affect the ablation effect. Medical personnel can only perform ablation according to experience, and cannot adjust the ablation scheme to the best according to the actual situation of the ablation catheter. SUMMARY

[0005] An object of the present application is to provide an ablation device to solve the problem that the existing ablation catheter cannot accurately obtain its shape when in use.

[0006] To achieve the above object, the technical scheme adopted by the present application is as follows:

[0007] An ablation device, comprising a handle, a catheter, a plurality of ablation electrodes distributed on the catheter, an energy generating device, the ablation device further comprising a monitoring component arranged on the catheter, a control module electrically connected or communicatively connected with the monitoring component, the control module being configured to receive signals transmitted by the monitoring component and analyze and process the received signals to obtain information representing the shape of the catheter.

[0008] Preferably, the monitoring component comprises a plurality of monitoring electrodes, and the control module is configured to control one or more monitoring electrodes to send signals and another one or more monitoring electrodes to receive signals.

[0009] Further preferably, the plurality of monitoring electrodes are spaced along the length of the catheter, and the information indicative of the morphology of the catheter comprises relative distance information, which is the relative distance between one monitoring electrode and another adjacent monitoring electrode.

[0010] Further preferably, the monitoring electrodes are at least three, and the control module is configured to control the middle monitoring electrode of the three monitoring electrodes arranged in sequence to receive signals and the two side monitoring electrodes to send signals.

[0011] Further preferably, the signals received by the middle monitoring electrode are superimposed signals of the signals sent by the two side monitoring electrodes, and the control module is configured to obtain relative distance data between the middle monitoring electrode and the two side monitoring electrodes according to the electrical parameter information corresponding to the superimposed signals, and the electrical parameter information is preferably voltage and / or current.

[0012] Further preferably, the plurality of ablation electrodes and the plurality of monitoring electrodes are spaced along the length of the catheter; and / or, along the length of the catheter, the ablation electrodes and the monitoring electrodes are staggered, and between two adjacent ablation electrodes, there is one or more monitoring electrodes.

[0013] Preferably, the control module comprises a signal transceiver unit and a signal processing unit; and / or, the ablation device further comprises a display unit connected to the control module to display the information indicative of the morphology of the catheter, thereby improving the visualization effect; and / or, the energy generating device is a pulse generating device connected to the plurality of ablation electrodes.

[0014] Preferably, the catheter comprises a first tube segment connected to the handle and a second tube segment away from the handle, the second tube segment assumes a set non-linear shape when not subjected to external force, and the second tube segment can be deformed when subjected to force, the plurality of ablation electrodes and the monitoring component are arranged on the second tube segment, and the information indicative of the morphology of the catheter comprises information indicative of the morphology of the second tube segment.

[0015] Further preferably, the ablation device further comprises a fixed electrode disposed on the catheter, the fixed electrode being adjacent to the distal end of the first tube segment and the proximal end of the second tube segment, the fixed electrode being electrically connected or communicatively connected to the control module, the control module being configured to receive signals from the fixed electrode and determine the starting position of the second tube segment accordingly, facilitating accurate monitoring.

[0016] Preferably, when the ablation device is in operation, the monitoring components and the ablation electrodes generate independent and non-interfering signals, respectively; and / or the control module is configured to provide pulse signals to the monitoring electrodes, the pulse signals having a frequency ranging from 1 KHz to 1 MHz.

[0017] Preferably, the energy generating device and the control module are independently provided or integrated as a whole, and the integration of the energy generating device and the control module can reduce the complexity of the device as a whole and facilitate operation.

[0018] Another object of the present application is to provide a method for obtaining a catheter shape in an ablation treatment, which method employs the ablation device as described above.

[0019] To achieve the above objects, the present application employs the following technical solution:

[0020] A method for obtaining a catheter shape in an ablation treatment, the method comprising performing the following procedures before, during and / or after performing an ablation operation:

[0021] (1) controlling the monitoring electrodes by the control module to perform multiple signal sending and receiving to obtain multiple groups of signals, the combination of the monitoring electrodes used for signal sending being different in the adjacent two signal sending and receiving processes, and the combination of the monitoring electrodes used for signal receiving being different in the adjacent two signal sending and receiving processes;

[0022] (2) analyzing and processing the multiple groups of signals by the control module to obtain information representing the catheter shape.

[0023] Preferably, in procedure (1), the monitoring electrodes at the proximal end and the distal end are excluded to ensure that each monitoring electrode has sent and received signals.

[0024] Preferably, each group of signals comprises signals fed back by one or more monitoring electrodes receiving signals, each fed-back signal being formed by superimposing signals emitted by two monitoring electrodes adjacent to the monitoring electrodes receiving signals.

[0025] Preferably, in the procedure (2), the analysis processing comprises filtering the feedback signal, obtaining the voltage amplitude corresponding to the feedback signal, further calculating the relative distance between the monitoring electrode receiving the signal and the two monitoring electrodes sending the signal according to the voltage amplitude, and finally synthesizing and summarizing all the relative distance data and converting them into information representing the shape of the catheter.

[0026] The present application also aims to provide an ablation device to solve the problem that the existing ablation catheter cannot obtain its shape during use.

[0027] To achieve the above-mentioned purposes, the technical scheme adopted by the present application is as follows:

[0028] An ablation device comprises a handle, a catheter, a plurality of electrodes distributed on the catheter, an energy generating device connected with the electrodes, and a control module electrically connected or communicatively connected with the electrodes, wherein the control module is configured to receive signals transmitted by the electrodes and analyze and process the received signals to obtain information representing the shape of the catheter; the ablation device has two use states, when in the first use state, the plurality of electrodes receive signals transmitted by the energy generating device and discharge to implement ablation treatment; when in the second use state, the control module controls one or more of the plurality of electrodes to send signals and the other one or more to receive signals to obtain the information representing the shape of the catheter.

[0029] Preferably, the plurality of electrodes are spaced along the length direction of the catheter, and the information representing the shape of the catheter comprises relative distance information, wherein the relative distance information is the relative distance between one electrode and another electrode adjacent to it.

[0030] Preferably, the electrodes are at least three, and the control module is configured to control the middle electrode among the three electrodes arranged in sequence to receive signals and the electrodes on both sides to send signals.

[0031] Further preferably, the signal received by the middle electrode is the superimposed signal of the signals sent by the electrodes on both sides, and the control module is configured to obtain the relative distance data between the middle electrode and the electrodes on both sides according to the electrical parameter information corresponding to the superimposed signal, and the electrical parameter information is preferably voltage and / or current.

[0032] Preferably, the control module comprises a signal transceiver unit and a signal processing unit; and / or, the ablation device further comprises a display unit connected with the control module, to display the information representing the shape of the catheter, to improve the visual effect; and / or, the energy generating device is a pulse generating device; and / or, in the second use state, the frequency of the signal sent by the electrode is 1KHz-1MHz.

[0033] Preferably, the catheter comprises a first tube segment connected with the handle and a second tube segment away from the handle, the second tube segment assumes a set non-linear shape when not subjected to external force, the second tube segment can be deformed when subjected to force, the plurality of electrodes are arranged on the second tube segment, and the information representing the shape of the catheter comprises information representing the shape of the second tube segment.

[0034] Further preferably, the ablation device further comprises a fixed electrode arranged on the catheter, the fixed electrode is adjacent to the distal end of the first tube segment and the proximal end of the second tube segment, the fixed electrode is electrically connected or communicatively connected with the control module, and the control module is configured to receive the signal of the fixed electrode and determine the starting position of the second tube segment accordingly, to facilitate monitoring of preparation.

[0035] Preferably, the energy generating device and the control module are independently arranged or integrated into one, and the integration of the energy generating device and the control module into one can reduce the overall complexity of the device and facilitate operation.

[0036] Thanks to the above technical solutions, the present application has the following advantages compared with the prior art:

[0037] The present application can obtain information representing the shape of the catheter by arranging the monitoring component and cooperating with the control module, to realize recognition of the shape of the catheter, which is conducive to medical personnel to formulate the optimal ablation scheme according to the recognition result and actual situation, to improve the ablation effect, to improve the work efficiency, to realize visual operation, and to have simple structure and convenient operation. BRIEF DESCRIPTION OF DRAWINGS

[0038] FIG. 1 is a schematic diagram of an ablation device according to an embodiment of the present application; Figure 1 FIG. 1 is a schematic diagram of an ablation device according to an embodiment of the present application;

[0039] FIG. 2 is a schematic diagram of an ablation device according to another embodiment of the present application; Figure 2 FIG. 2 is a schematic diagram of an ablation device according to another embodiment of the present application;

[0040] FIG. 3 is a schematic diagram of an ablation device according to another embodiment of the present application; Figure 3 FIG. 3 is a schematic diagram of an ablation device according to another embodiment of the present application;

[0041] FIG. 4 is a schematic diagram of an ablation device according to another embodiment of the present application; Figure 4It is shown that the second tube segment of the ablation device in some embodiments can be bent to form an inner ring and an outer ring after entering the human body channel;

[0042] The electrodes on the inner ring and the outer ring of the second tube segment of the ablation device in some embodiments are shown to be arranged in a coincident manner; Figure 5 The electrodes on the inner ring and the outer ring of the second tube segment of the ablation device in some embodiments are shown to be arranged in a coincident manner;

[0043] The electrodes on the inner ring and the outer ring of the second tube segment of the ablation device in some embodiments are shown to be arranged in a coincident manner; Figure 6 The electrodes on the inner ring and the outer ring of the second tube segment of the ablation device in some embodiments are shown to be arranged in a coincident manner.

[0044] In the above drawings: 1, catheter; 11, first tube segment; 12, second tube segment; 121, inner ring; 122, outer ring; 2, handle; 3, ablation electrode; 4, energy generating device; 5, monitoring component; 50, monitoring electrode; 6, fixed electrode; 7, control module; 71, signal transceiver unit; 72, signal processing unit; 8, display unit; 9, electrode. DETAILED DESCRIPTION

[0045] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0046] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0047] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0048] Embodiment one

[0049] An ablation device, such as Figure 1As shown, it comprises a catheter 1, a handle 2, an ablation electrode 3 and an energy generating device 4, the handle 2 is connected with the catheter 1, the handle 2 can be used to control the deformation of the catheter 1, the ablation electrode 3 is arranged on the catheter 1, the energy generating device 4 is connected with the ablation electrode 3, and the energy generating device 4 is used to provide ablation energy for the ablation electrode 3.

[0050] Specifically: the catheter 1 comprises a first tube segment 11 and a second tube segment 12, the proximal end of the first tube segment 11 is connected with the handle 2, the distal end of the first tube segment 11 is connected with the proximal end of the second tube segment 12, the first tube segment 11 extends along its axial direction, the second tube segment 12 presents a set non-linear shape when not subjected to external force, and the second tube segment 12 can be deformed when subjected to force, for example, the second tube segment 12 presents a ring shape when not subjected to external force, and the diameter of the ring shape or the variable straightness can be changed when subjected to force. The handle 2 can be used to move the catheter 1 and control the deformation of the catheter 1, for example: an operation part is arranged on the handle 2, an adjusting pull wire is arranged in the catheter 1, the distal end of the adjusting pull wire is connected with the second tube segment 12 of the catheter 1, and the proximal end of the adjusting pull wire is connected with the operation part of the handle 2, so that the diameter and shape of the second tube segment 12 can be changed by controlling the operation part of the handle 2. The above is an example of the handle 2 controlling the deformation adjustment of the catheter 1 given by the embodiment, but it is not limited to this example.

[0051] The ablation electrode 3 is arranged on the second tube segment 12 of the catheter 1, and the ablation electrode 3 is arranged in multiple, multiple ablation electrodes 3 are distributed along the length direction of the second tube segment 12, that is, there is a certain spacing between adjacent two ablation electrodes 3. The energy generating device 4 is used to provide ablation energy to the ablation electrode 3, and the energy generating device 4 and the ablation electrode 3 can be connected with each other in the form of electrical connection such as wire connection. In the embodiment: the energy generating device 4 adopts a pulse generating device, the pulse generating device is electrically connected with the ablation electrode 3, and can provide pulse ablation energy to the ablation electrode 3, so that the ablation electrode 3 discharges, and the frequency range of the pulse ablation energy is 1KHz-1MHz.

[0052] In order to achieve the purpose of obtaining the shape of the catheter 1 in the ablation treatment, the ablation device further comprises a monitoring component 5 and a control module 7, the monitoring component 5 is arranged on the catheter 1, and the monitoring component 5 is connected with the control module 7, and the two cooperate with each other to identify the shape of the catheter 1.

[0053] Specifically, the monitoring component 5 includes multiple monitoring electrodes 50, which are spaced apart along the length of the conduit 1, meaning there is a certain distance between adjacent monitoring electrodes 50. Furthermore, the monitoring electrodes 50 and ablation electrodes 3 are staggered; that is, an ablation electrode 3 is placed between two adjacent ablation electrodes 3, and there is also a certain distance between the ablation electrode 3 and the monitoring electrode 50. Of course, multiple monitoring electrodes 50 can also be placed between two adjacent ablation electrodes 3 to improve the accuracy of identification. In this embodiment, one monitoring electrode 50 is placed between two adjacent ablation electrodes 3, such as... Figure 1 As shown. The monitoring electrode 50 can be used to transmit or acquire signals, that is, the monitoring electrode 50 has two functions: transmitting and acquiring signals. However, it cannot use both functions simultaneously; only one function can be selected. Specifically, the monitoring electrode 50 should have at least three electrodes, such as... Figure 3 As shown, the monitoring electrodes 50 located on both sides are used to transmit signals, and the monitoring electrode 50 located in the middle is used to receive signals. The received signal is a superposition of the signals transmitted by the monitoring electrodes 50 located on both sides.

[0054] The control module 7 is electrically or communicatively connected to the monitoring component 5, meaning that the control module 7 is electrically or communicatively connected to all monitoring electrodes 50. The control module 7 includes a signal transceiver unit 71 and a signal processing unit 72, specifically:

[0055] The signal transceiver unit 71 can control one or more monitoring electrodes 50 to send signals and another one or more monitoring electrodes 50 to receive signals. The signal transceiver unit 71 can also receive signals transmitted by the monitoring electrodes 50. For example, when three monitoring electrodes 50 are provided, the signal transceiver unit 71 can control the monitoring electrode 50 located in the middle of the three sequentially arranged monitoring electrodes 50 to receive signals and the monitoring electrodes 50 located on both sides to send signals. The signal transceiver unit 71 can also acquire the signal received by the monitoring electrode 50 located in the middle. In this embodiment, the signal transceiver unit 71 controls the monitoring electrode 50 to send pulse signals. The frequency range of the pulse signals is 1KHz-1MHz. The pulse signals can be sine waves, triangular waves, or rectangular waves, etc. In addition, although the ablation electrode 3 also releases pulse ablation energy and the frequency range of the two is the same, when the ablation device is in working state, the monitoring electrode 50 and the ablation electrode 3 generate independent and non-interfering signals, that is, the monitoring electrode 50 and the ablation electrode 3 use different frequency values.

[0056] The signal processing unit 72 can analyze and process the signals received by the monitoring electrodes 50 to obtain information representing the shape of the catheter 1. Since the monitoring electrodes 50 are arranged on the second tube segment 12, the information representing the shape of the catheter 1 is specifically information representing the shape of the second tube segment 12. The information representing the shape of the catheter 1 includes relative distance information, which specifically refers to the relative distance between one monitoring electrode 50 and another monitoring electrode 50 adjacent to it. For example, when the monitoring electrodes 50 are arranged in three, the relative distance information is the relative distance between the monitoring electrode 50 in the middle and the monitoring electrodes 50 on the two sides. The signal processing unit 72 can obtain the relative distance between the monitoring electrode 50 in the middle and the monitoring electrodes 50 on the two sides according to the electrical parameter information corresponding to the superimposed signals received by the monitoring electrode 50 in the middle. The electrical parameter information is preferably voltage and / or current.

[0057] In addition, in order to accurately determine the starting position of the second tube segment 12, the ablation device also includes a fixed electrode 6 adjacent to the distal end of the first tube segment 11 and the proximal end of the second tube segment 12, and the fixed electrode 6 is electrically connected or communicatively connected to the control module 7. Specifically, the control module 7 can receive the signals of the fixed electrode 6, and when analyzing and processing the signals received by the monitoring electrodes 50, the position of the fixed electrode 6 can be calculated and marked as the starting position of the second tube segment 12, accurately distinguishing the first tube segment 11 from the second tube segment 12. The fixed electrode 6 can be provided with one or more, and in this embodiment, the fixed electrode 4 is provided with one.

[0058] In order to improve the visualization, the ablation device also has a display unit 8 for displaying the information representing the shape of the catheter 1 obtained by the control module 7, specifically displaying the shape of the catheter 1 directly. The display unit 8 and the control module 7 can be connected to each other by electrical connection means such as wires, and the display module 8 can specifically use a display device.

[0059] In addition, in this embodiment, the monitoring electrodes 50 have the functions of transmitting signals and collecting signals, and also have the function of releasing ablation energy, so that the ablation electrodes 3 release ablation energy while the monitoring electrodes 50 are used to release ablation energy, and the ablation electrodes 3 and the monitoring electrodes 50 cooperate to release ablation energy, which can further improve the ablation effect. In this case, the monitoring electrodes 50 are electrically connected to the energy generator 4 in addition to being connected to the control module 7.

[0060] The following describes the process of identifying the shape of the catheter 1 in the ablation treatment using the ablation device of this embodiment. The identification process can be performed before, during and / or after the ablation operation, and specifically includes the following procedures:

[0061] (1) the control module 7 controls the monitoring electrodes 50 to send and receive signals for multiple times to obtain multiple groups of signals, in the adjacent two times of signal sending and receiving, the combination of the monitoring electrodes 50 used for sending signals is different, and the combination of the monitoring electrodes 50 used for receiving signals is also different, specifically: the control module 7 controls the monitoring electrodes 50 to send and receive signals for multiple times, and ensures that each monitoring electrode 50 sends and receives signals, for example:

[0062] The monitoring electrodes 50 are numbered in sequence from the nearest end of the second pipe section 12, first sending and receiving signals for the first time, that is, the monitoring electrodes 50 numbered with odd numbers are used for sending signals, and the monitoring electrodes 50 numbered with even numbers are used for receiving signals, specifically, the monitoring electrodes 50 numbered with even numbers can receive the signals sent by the monitoring electrodes 50 numbered with odd numbers on both sides, and form superimposed signals, and all the monitoring electrodes 50 numbered with even numbers transmit the received superimposed signals to the control module 7, then sending and receiving signals for the second time, that is, the monitoring electrodes 50 numbered with odd numbers are used for receiving signals, and the monitoring electrodes 50 numbered with even numbers are used for sending signals, specifically, the monitoring electrodes 50 numbered with odd numbers can receive the signals sent by the monitoring electrodes 50 numbered with even numbers on both sides, and form superimposed signals, and all the monitoring electrodes 50 numbered with odd numbers transmit the received superimposed signals to the control module 7, thus, except for the monitoring electrodes 50 numbered with the smallest number and the largest number, each monitoring electrode 50 obtains superimposed signals; of course, the monitoring electrodes 50 numbered with odd numbers can be used for receiving signals and the monitoring electrodes 50 numbered with even numbers can be used for sending signals when sending and receiving signals for the first time, and the monitoring electrodes 50 numbered with even numbers can be used for receiving signals and the monitoring electrodes 50 numbered with odd numbers can be used for sending signals when sending and receiving signals for the second time.

[0063] Or, only the monitoring electrodes 50 numbered with 1, 2 and 3 are used for sending and receiving signals when sending and receiving signals for the first time, that is, the monitoring electrodes 50 numbered with 1 and 3 are used for sending signals, and the monitoring electrodes 50 numbered with 2 are used for receiving signals, then sending and receiving signals for the second time, only the monitoring electrodes 50 numbered with 2, 3 and 4 are used for sending and receiving signals, that is, the monitoring electrodes 50 numbered with 2 and 4 are used for sending signals, and the monitoring electrodes 50 numbered with 3 are used for receiving signals, and so on, until the monitoring electrodes 50 numbered with the last three are used for sending and receiving signals; of course, the monitoring electrodes 50 numbered with the last three can be used for sending and receiving signals first when sending and receiving signals for the first time, and the monitoring electrodes 50 numbered with 1, 2 and 3 can be used for sending and receiving signals last.

[0064] (2) The control module 7 analyzes and processes multiple sets of signals to obtain information characterizing the morphology of catheter 1. Specifically, the analysis and processing includes: when the control module 7 analyzes and processes multiple sets of signals, it first filters the superimposed signal fed back by the monitoring electrode 50 of the receiving signal to obtain the voltage amplitude corresponding to the superimposed signal, and further calculates the relative distance between the monitoring electrode 50 of the receiving signal and the two monitoring electrodes 50 of the transmitting signal based on the voltage amplitude. Finally, it summarizes all the relative distance data and converts it into information characterizing the morphology of catheter 1.

[0065] After completing the morphology recognition procedure, the control module 7 transmits the information representing the morphology of catheter 1 to the display unit 8. Therefore, the operator can view the recognition results on the display module 8 and adjust the morphology of the second tube segment 12 accordingly. For example, the operator can change the bending direction and bending diameter of the second tube segment 12 using the handle 2 to achieve the optimal morphology. After adjustment, the ablation electrode 3 is controlled by the energy generator 4 to release ablation energy, completing the ablation process. Alternatively, the ablation electrode 3 can be controlled by the energy generator 4 to release ablation energy simultaneously with morphology recognition, thus achieving real-time morphology recognition during the ablation process.

[0066] Example 2

[0067] An ablation device, such as Figure 2 As shown, the device includes a catheter 1, a handle 2, a fixed electrode 6, an electrode 9, an energy generating device 4, and a control module 7. The catheter 1, handle 2, and fixed electrode 6 in this embodiment are identical to those in Embodiment 1, and will not be described again here. The electrode 9 is mounted on the catheter 1. The energy generating device 4 and the control module 7 are both connected to the electrode 9. The energy generating device 4 provides ablation energy to the electrode 9, and the control module 7 controls the electrode 9 to send or receive signals. Specifically:

[0068] Electrodes 9 are disposed on the second segment 12 of the conduit 1. Multiple electrodes 9 are disposed at intervals along the length of the second segment 12, meaning there is a certain distance between adjacent electrodes 9. Electrodes 9 can be used to transmit signals, acquire signals, or release ablation energy; that is, electrodes 9 have three functions: transmitting signals, acquiring signals, and releasing ablation energy. However, they cannot transmit signals, acquire signals, and release ablation energy simultaneously; only one function can be selected. At least three electrodes 9 are disposed: the electrodes on both sides are used for transmitting signals, and the electrode in the middle is used for receiving signals. The received signal is a superposition of the signals transmitted by the electrodes on both sides.

[0069] The control module 7 is in electrical connection or communication connection with the plurality of electrodes 9, the control module 7 comprises a signal transceiving unit 71 and a signal processing unit 72, specifically: the signal transceiving unit 71 can control one or more electrodes 9 to send signals, and another one or more electrodes 9 to receive signals, and the signal transceiving unit 71 can also receive the signals transmitted by the electrodes 9, for example, when the electrodes 9 are provided with three, the signal transceiving unit 71 can control the electrode 9 located in the middle of the three electrodes 9 arranged in sequence to receive signals, and the electrodes 9 located on both sides to send signals, and the signal transceiving unit 71 obtains the signals received by the electrode 9 located in the middle; the signal processing unit 72 can analyze and process the signals received by the electrodes 9, and then obtain information representing the shape of the catheter 1, since the electrodes 9 are provided on the second tube segment 12, the information representing the shape of the catheter 1 is specifically information representing the shape of the second tube segment 12, and the information representing the shape of the catheter 1 comprises relative distance information, which specifically refers to the relative distance between one electrode 9 and another electrode 9 adjacent to it, and the signal processing unit 72 can obtain the relative distance between the electrode 9 located in the middle and the electrodes 9 located on both sides according to the electrical parameter information corresponding to the superimposed signals received by the electrode 9 located in the middle, and the electrical parameter information is preferably voltage and / or current. In the embodiment, the signal transceiving unit 71 controls the electrodes 9 to send pulse signals, the frequency range of the pulse signals is 1KHz-1MHz, and the pulse signals can adopt sine waves, or triangular waves, or rectangular waves, etc.

[0070] The energy generating device 4 is used to provide ablation energy to the electrodes 9, and the energy generating device 4 and the plurality of electrodes 9 are connected to each other by electrical connection modes such as wire connection. In the embodiment, the energy generating device 4 adopts a pulse generating device, which can provide pulse ablation energy to the electrodes 9, so that the electrodes 9 release ablation energy, and the frequency range of the ablation energy is 1KHz-1MHz.

[0071] The ablation device has two use states, when in the first use state, the plurality of electrodes 9 receives signals transmitted by the energy generating device 4 and discharges, so as to implement ablation treatment; when in the second use state, the control module 7 controls one or more of the plurality of electrodes 9 to send signals, and another one or more to receive signals, so as to obtain information representing the shape of the catheter 1. In addition, although the energy generating device 4 and the control module 7 control the electrodes 9 to release pulse signals, and the frequency ranges of the two are consistent, when the ablation device is in the first use state and the second use state, the electrodes 9 respectively generate independent and non-interfering signals, that is, the specific values of the frequencies are different.

[0072] Of course, in order to improve the visualization, the ablation device also has a display unit 8, the role of the display unit 8 is consistent with that in embodiment one. However, in the present embodiment, the display unit 8, the energy generating device 4 and the control module 7 are integrated, which reduces the complexity of the whole ablation device, and facilitates operation and carrying.

[0073] The process of shape recognition of the catheter 1 in the ablation treatment by the ablation device of the present embodiment is described below, which can be performed before and / or after the ablation operation, and specifically includes the following procedures:

[0074] (1) The electrode 9 is controlled by the control module 7 to perform multiple signal sending and receiving to obtain multiple groups of signals. In the adjacent two signal sending and receiving processes, the combination of the electrodes 9 used for signal sending is different, and the combination of the electrodes 9 used for signal receiving is also different. Specifically, the electrode 9 is controlled by the control module 7 to perform multiple signal sending and receiving, and the electrodes 9 at the nearest end and the farthest end are excluded to ensure that each electrode 9 has sent and received signals, for example:

[0075] The electrodes 9 at the nearest end of the second tube segment 12 are numbered in sequence, and first, the first signal sending and receiving is performed, that is, the electrodes 9 numbered with odd numbers are used for signal sending, and the electrodes 9 numbered with even numbers are used for signal receiving. Specifically, the electrodes 9 numbered with even numbers can receive the signals sent by the electrodes 9 numbered with odd numbers on both sides, and form superimposed signals. All the electrodes 9 numbered with even numbers transmit the received superimposed signals to the control module 7. Subsequently, the second signal sending and receiving is performed, that is, the electrodes 9 numbered with odd numbers are used for signal receiving, and the electrodes 9 numbered with even numbers are used for signal sending. Specifically, the electrodes 9 numbered with odd numbers can receive the signals sent by the electrodes 9 numbered with even numbers on both sides, and form superimposed signals. All the electrodes 9 numbered with odd numbers transmit the received superimposed signals to the control module 7. At this time, each electrode 9 obtains superimposed signals except for the electrodes 9 with the smallest number and the largest number. Of course, the electrodes 9 numbered with odd numbers can be used for signal receiving and the electrodes 9 numbered with even numbers can be used for signal sending when the first signal sending and receiving is performed, and the electrodes 9 numbered with even numbers can be used for signal receiving and the electrodes 9 numbered with odd numbers can be used for signal sending when the second signal sending and receiving is performed.

[0076] Alternatively, in the first signal transmission and reception, only the electrodes 9 numbered 1, 2 and 3 are used for signal transmission and reception, i.e. the electrodes 9 numbered 1 and 3 are used for signal transmission, and the electrode 9 numbered 2 is used for signal reception, and in the second signal transmission and reception, only the electrodes 9 numbered 2, 3 and 4 are used for signal transmission and reception, i.e. the electrodes 9 numbered 2 and 4 are used for signal transmission, and the electrode 9 numbered 3 is used for signal reception, and so on until the electrodes 9 numbered the last three are used for signal transmission and reception; of course, the electrodes 9 numbered the last three can be used for signal transmission and reception first in the first signal transmission and reception, and the electrodes 9 numbered 1, 2 and 3 are used for signal transmission and reception last.

[0077] (2) The control module 7 analyzes and processes the multiple groups of signals to obtain information representing the shape of the catheter 1, specifically: the analysis and processing includes: when the control module 7 analyzes and processes the multiple groups of signals, first, the superimposed signals fed back by the electrodes 9 receiving the signals are filtered to obtain the voltage amplitudes corresponding to the superimposed signals, and then the relative distances between the electrodes 9 receiving the signals and the two electrodes 9 transmitting the signals are calculated according to the voltage amplitudes, and finally all the relative distance data are integrated and summarized to be converted into information representing the shape of the catheter 1.

[0078] After the above shape identification procedure is completed, the control module 7 transmits the information representing the shape of the catheter 1 to the display unit 8, so that the operator can view the identification result on the display module 8, and adjust the shape of the second tube segment 12 according to the identification result, for example, change the bending direction and diameter of the second tube segment 12 through the handle 2, so that the shape of the second tube segment 12 reaches the optimal state. After the adjustment is completed, the energy generating device 4 controls the electrodes 9 to release ablation energy, and the ablation is completed.

[0079] Of course, in some embodiments, after the catheter shape identification procedure is completed, if the second tube segment 12 is bent to form an inner ring 221 and an outer ring 222, as shown in Figure 4 , the discharge parameters of the electrodes 9 can be adjusted before ablation according to the distribution of the electrodes 9 on the inner ring 221 and the outer ring 222, as shown in Figure 5 and Figure 6 , specifically: when the positions of the electrodes 9 on the inner ring 221 and the outer ring 222 of the second tube segment 12 coincide, the discharge parameters are adjusted so that the electrodes 9 on the inner ring 221 and the outer ring 222 discharge at the same time, and the electric arc generated by the inner ring 221 and the outer ring 222 can be eliminated; when the positions of the electrodes 9 on the inner ring 221 and the outer ring 222 of the second tube segment 12 are spaced apart, the discharge parameters are adjusted, i.e. the discharge voltage of the electrodes 9 is adjusted to become K*(B-A) / B of the original, where B is the electrode gap, A is the electrode length, and K is a proportionality factor, K is 0.1-1.

[0080] In addition, in some embodiments, after the aforementioned ablation is completed, the aforementioned catheter shape recognition procedure can be repeated once again. The superimposed signals of the electrodes 9 obtained by the control module 7 in the aforementioned catheter shape recognition procedure are compared with the superimposed signals of the electrodes 9 obtained by the control module 7 in the current catheter shape recognition procedure, and the effect of the aforementioned ablation is obtained. Specifically, if the superimposed signals of the electrodes 9 obtained by the control module 7 in the aforementioned catheter shape recognition procedure change less than the superimposed signals of the electrodes 9 obtained by the control module 7 in the current catheter shape recognition procedure, it indicates that no transmural damage is formed after the aforementioned ablation, and the shape of the catheter 1 needs to be adjusted again and further ablation is needed.

[0081] The above embodiments are only for illustrating the technical concepts and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and to implement it, and cannot limit the protection scope of the present application. Any equivalent changes or modifications made in accordance with the spirit and essence of the present application shall be covered within the protection scope of the present application.

Claims

1. An ablation device comprising a handle, a catheter, a plurality of ablation electrodes distributed on said catheter, an energy generating device, characterized in that: The ablation device further comprises a monitoring component arranged on the catheter, and a control module electrically connected or communicatively connected with the monitoring component, wherein the monitoring component comprises a plurality of monitoring electrodes, the plurality of monitoring electrodes are arranged along the length direction of the catheter, and the plurality of monitoring electrodes comprise at least three monitoring electrodes; the control module is configured to control the monitoring electrode located in the middle of the three monitoring electrodes arranged in sequence to receive signals, and the monitoring electrodes located on both sides to send signals, the signals received by the monitoring electrode located in the middle are superimposed signals of the signals sent by the monitoring electrodes located on both sides, the control module is configured to receive the electrical parameter information corresponding to the superimposed signals transmitted by the monitoring component to obtain the relative distance data between the monitoring electrode located in the middle and the monitoring electrodes located on both sides, and further obtain the information representing the shape of the catheter.

2. The ablation device of claim 1, wherein: The electrical parameter information is voltage and / or current.

3. The ablation device of claim 1, wherein: The plurality of ablation electrodes and the plurality of monitoring electrodes are arranged along the length direction of the catheter respectively; and / or, the ablation electrodes and the monitoring electrodes are staggered along the length direction of the catheter, and one or more monitoring electrodes are arranged between adjacent two ablation electrodes.

4. The ablation device of claim 1, wherein: The control module comprises a signal transceiver unit and a signal processing unit; and / or, the ablation device further comprises a display unit connected with the control module to display the information representing the shape of the catheter. The energy generating device is a pulse generating device connected with the plurality of ablation electrodes.

5. The ablation device of claim 1, wherein: The catheter comprises a first tube segment connected with the handle and a second tube segment away from the handle, the second tube segment presents a set non-linear shape when not subjected to external force, the second tube segment can be deformed when subjected to force, the plurality of ablation electrodes and the monitoring component are arranged on the second tube segment, and the information representing the shape of the catheter comprises information representing the shape of the second tube segment.

6. The ablation device of claim 5, wherein: The ablation device further comprises a fixed electrode arranged on the catheter, the fixed electrode is adjacent to the distal end of the first tube segment and the proximal end of the second tube segment, the fixed electrode is electrically connected or communicatively connected with the control module, and the control module is configured to receive signals of the fixed electrode and determine the starting position of the second tube segment accordingly.

7. The ablation device of any one of claims 1 to 6, wherein: When the ablation device is in a working state, the monitoring component and the ablation electrodes generate independent and non-interfering signals respectively; and / or, the control module is configured to provide pulse signals to the monitoring electrodes, and the frequency range of the pulse signals is 1KHz-1MHz.

8. An ablation device comprising a handle, a catheter, a plurality of electrodes distributed on said catheter, energy generating means connected to said electrodes, characterized in that: The ablation device further comprises a control module electrically connected or communicatively connected with the plurality of electrodes, the plurality of electrodes are spaced along the length direction of the catheter, the plurality of electrodes are at least three, the control module is configured to control the middle electrode of the three electrodes in sequence to receive signals, and the electrodes on both sides to send signals, the middle electrode receives the superimposed signals of the signals sent by the electrodes on both sides, the control module is configured to receive the electrical parameter information corresponding to the superimposed signals transmitted by the electrodes to obtain the relative distance data between the middle electrode and the electrodes on both sides, and further obtain the information representing the catheter shape; the ablation device has two use states, when in the first use state, the plurality of electrodes receive the signals transmitted by the energy generating device and discharge to implement ablation treatment; When in the second use state, the control module controls one or more of the plurality of electrodes to send signals, and the other one or more to receive signals, so as to obtain the information representing the catheter shape.

9. The ablation device of claim 8, wherein: The electrical parameter information is voltage and / or current.

10. The ablation device of claim 8, wherein: The control module comprises a signal transceiver unit and a signal processing unit; and / or, the ablation device further comprises a display unit connected with the control module to display the information representing the catheter shape; And / or, the energy generating device is a pulse generating device; And / or, in the second use state, the frequency of the signals sent by the electrodes is 1KHz-1MHz.

11. The ablation device of claim 8, wherein: The catheter comprises a first tube segment connected with the handle and a second tube segment away from the handle, the second tube segment presents a set non-linear shape when not subjected to external force, the second tube segment can be deformed when subjected to force, the plurality of electrodes are arranged on the second tube segment, and the information representing the catheter shape comprises information representing the shape of the second tube segment.

12. The ablation device of claim 11, wherein: The ablation device further comprises a fixed electrode arranged on the catheter, the fixed electrode is adjacent to the distal end of the first tube segment and the proximal end of the second tube segment, the fixed electrode is electrically connected or communicatively connected with the control module, and the control module is configured to receive the signals of the fixed electrode and determine the starting position of the second tube segment accordingly.

13. The ablation device of claim 1 or 12, wherein: The energy generating device and the control module are independently arranged or integrated.

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